Materials Literature
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The spectral and kinetic characteristics of YAG:Ce,Tb powders (with Tb 3+ concentration varying up to 100%, relative to Y) using cathode-ray and UV excitations were determined. The energy diagram of YAG:Ce,Tb was constructed and energy transfer processes in the compound were studied. The most effective resonance energ…
Analytical and numerical approaches are presented for modeling the interaction of azimuthally symmetric fields with omnidirectional metasurfaces, based on the use of locally homogenized equivalent sheet impedances. Radially uniform metasurfaces on layered dielectric media are described in terms of a spectral impedance…
The compositions of β type Ti alloys having shape-memory ability above 400 K were proposed by alloying parameters used in the d-electrons concept. They were both Ti-6Mo-2Al-1Sn and Ti-6Nb-3Mo which were designed for improvement of thermal stability in shape memory behavior of Ti-6Mo base alloy, preserving the tensile…
Future progress in materials for tissue engineering and 3D cell cultures applications requires control of two key physical properties: nanoscale mechanical properties and mass transport. These requirements remain uncontrolled partly due to a lack of physical parameters and quantitative measurements. Using chitosan sca…
Quaternary semiconductor CuZnFeS nanocrystals with controlled size, shape and composition have been successfully synthesized and utilized to fabricate photovoltaic and photosensitive devices.
Core-shell hybrid particles, possessing a hard core of silica particles (SiPs) and a soft shell of brushlike polystyrene (PS), were successfully prepared by the combination of lithium-iodine exchange (LIE) and surface-initiated living anionic polymerization (SI-LAP). The molecular weight, graft density and brush thick…
3-Fluorothieno[3,4- b ]thiophene-2-carboxylate-based conjugated polymers were synthesized and their electrochromic devices displayed good optical contrasts, good coloration efficiencies and reasonable redox stability.
The directed self-assembly (DSA) of block copolymers (BCPs) has emerged as an alternative method to replace or complement conventional photolithography as a result of the approximately 10 nm scale of microdomain ordering, the variety of microstructures that can be obtained and its compatibility with current lithograph…
In the present work, two LiBH 4 based hydrogen storage composites, namely, 3LiBH 4 /graphene and 3LiBH 4 /graphene–10 wt% CeF 3 , were prepared through ball milling and their hydrogen sorption behaviors were investigated.
The vibrational dynamics of germanium dioxide in the rutile structure has been investigated by using polarized micro-Raman scattering spectroscopy coupled with first-principles calculations. Raman spectra were carried out in backscattering geometry at room temperature from micro-crystalline samples either unoriented o…
Synthesis and structural characterization of LASSBIO 1601: a cyclohexyl- N -acylhydrazone derivative.
A porous polymer film was fabricated at a liquid/liquid interface that can be used as a matrix to form various composite films.
Stabilization of mono-and disilicic acids is accomplished by using a cationic polymeric chemical additive, polyethyleneimine (PEI), in supersaturated silica solutions (the starting solution contained 500 ppm/8.3mM sodium orthosilicate, Na 2 SiO 3 •5H 2 O, expressed as SiO 2 ) at pH = 7.The PEI polymeric system contain…
Fmoc-pentapeptide β-sheets with amino acid residues of cysteine, lysine and valine work as redispersants for agglomerated ligand-free metal nanoparticles.
Rambutan‐like ZnO hierarchical hollow microspheres (ZnO HHMs) were constructed under hydrothermal conditions, using carboxyl methyl starch (CMS) as a soft template. The resulting products were characterized by using X‐ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM)…
An open coaxial re-entrant microwave sensor has been used for the non-invasive and continuous monitoring of the sol-gel transition of physical gels characterized by different gelation mechanisms, solvents, compositions, and stabilities. Comparison of measurements by differential scanning calorimetry allowed the identi…
In this article we report on the controlled synthesis of asymmetric lemon-shaped and dumbbell-shaped multi-compartment nanoparticles (MCPs) with a reactive surface and interesting morphology. In our approach we utilize partial coating of hematite ellipsoids with a hydrophobic polymer layer followed by selective silica…
This paper concerns, the problem to assess 3-D distributions of magnetic induction in soft magnetic systems like machine cores of transformers or generators. Within bulk material, estimations of distributions are restricted to numerical methods like FEM, the application of sensors being hard. On the other hand, in lam…
Highly uniform and perfectly crystallized ZnGa 2 O 4 hollow NSs were successfully fabricated via carbon@Ga(OH)CO 3 @Zn(OH) 2 core–shell–shell nanostructures by a two step hydrothermal method.
A compact composite right/left-handed transmission-line (CRLH TL) stub resonator is presented. The bandpass frequency of the resonator and the adjacent transmission-zeros are determined by the negative order resonance modes of the stub line. We demonstrate that these resonance frequencies can be arbitrarily controlled…